Nonrun knitted fabric and method of producing it



- NONRUN KNITTED FABRIC AND METHOD 0F PRODUCING IT Filed Oct. 25, 1939 2 Sheets-Sheet 1 FIG.' 1i

J Z S S o e S S* QS) 9 Q 4&24 N M o @7mdm` Johannes Paz/112211111111@ March 26, 11940. J. P. LUDWIG NONRUN KNITTED FABRIC AND METHOD 0F PRODUCING IT Filed oet. 25, 1939 2 sheets-sheet 2 LIQ/www mul Lm'ivz j v `ATTORNEYS.

Patented Mar. 26,

NONRUN KNITTED FABRIC ANDy v:METHOD a F PRODUCINGIT' Johannes Paul Ludwig, Milwaukee, Wis., assignor to Phoenix Hosiery Company, Milwaukee, Wis., a corporation of Wisconsin Application October 25, 1939, Serial No. 301,097

" `rz Claims. (Cl. ses-19s) This invention has reference to nonrun knitted fabric. More specifically, itis concerned with -nonrun weft knitted fabrics useful in connection with stockings and the like, and to methods of producing such fabrics.

My invention has f or 'its chief aims to render weft knitted fabrics of the kind referred to proof against Wale-wise running in 'the event of loop rupture at any point, and to secure this desidera- [0 tum without distortion such as would detract from'the appearance of the fabrics, and without materially affecting their elasticity-or other desirable characteristics such as resistance to snagging, strength, etc. i

l5 One way in which the foregoing and other advantages may be readily realized in practice, will appear from the following detailed description of the attached drawings, wherein Fig. I'is a fragmentary diagrammatic view showing one face of nonrun knitted fabric conveniently embodying my invention.

Fig. II is a similar view showing the,opposite face of lthe fabric.

Figs. III-XII are detail views illustrating successive steps in the production of the fabric, Figs. III, VI, IX and XI `being perspective views, Figs.

IV, V and VII fragmentary views in elevation and crossed over the other leg of such loop and also across an adjacent sinker wale loop 1, and doubled with a plain loop 8 of a neighboring Wale in 4o the same course. It will be further noted from Figs. I and II, that in each course I, a. pair of plain loops 9, I0 intervene between each pair` of the lock stitches 2, and moreover that the lock stitches in one lockv stitch course I are staggered 5 relative to lock stitches in the next lockfstitch course throughout the fabric. Accordingly, by virtue of such disposal and since each lock stitch involves a pair of adjacent loops 6 and 8, a. lock stitch in one course I protects the two wales containing the two plain loops 9 and I0 between a pair of the lock stitches in the next lock stitch course, withthe result that the fabric is well protected against running throughout its width. By interposition of two plain courses 3 and l between each pair of the lock ,stitch courses I and by staggering the lock switches 2 as explained, a symmetrical disposal of said lock stitches is had by which the appearance of the fabric is greatly enhanced. If desired, however, the lock stitches may, within the scope of my invention, be ar- 5 ranged otherwise than shown and the number of plain courses between the lock Stitch'courses increased or decreased as may be found convenient or desirable in practice.

'I'he fabric may be readily produced on a flat 10 knitting machine of. the cotton type after the manner shown in Figs. II-X, having a series of needles N, sinkers S, knock overs K, and an end- Wise shiftable point bar (not illustrated) with special grooved loop transfer points P, which are 16 spaced by a distance of five needles and arranged to cooperate with individual needles. As shown, the points P, are of a type in which a portion of one of the side walls of the groove is omitted to enable lateral transfer of half loops in the man- 20 ner presently explained. In forming a lock stitch course I according to my invention, the needles N are actuated to first produce a row of plain loops as in Fig. III, whereupon the points P are lowered and the needles bodily moved inward so 25 that definite` needles N' are brought into engagement with said points Without closing of the needle beards. After such engagement, the points and the needles are lowered together as shown in Fig. IV and the tipsV of the points thus passed into the loops heldI on the shanks of the p engaged needles Nf. As the descent of the needles N and the points P continues, the needle beards move over the loops 6 held on said needles as said points enter further into the loops 6. This condition is shown vin Figs. V and VI. As the needles descend still further from the position of Fig. VI, the loops 6 are Caught in the needle beards as shown in Fig. VII. In the next step, the needles are retracted from the points as in Figs. VIII and IX, incident to which bights 5 are drawn from the left hand side legs of the loops 6 held on the needles N'. 'Ihe points P yare then elevated and moved to the right by the distance of one needle as shown in Figs. X and 5 XI. At this stagev of the operation, the needles are low and hold the loops 6, while the bights 5 of said loops engaged by the points P are elevated. above the .needles. Accordingly, as the points i; are shifted rightward as above explained, the portions il of the engaged loops 6 will be swung over the tops of the needles N as shown in Fig. X. Thereupon, the needles are again moved toward the points with attendant engagement, now of the needles N* (adjacent the needles N) with said-points. In'this movement, due to the disalignment of the needles N2 with respect to the other needles as exemplified in Fig. X11, the bights of the loops 6 engaged by the points are turned rearward over the tops of the needles N with resultant formation of the twists therein as shown in Fig. XII. The needles are then 4elevated together with the points and in such movement the needles N2 pass up through the twisted bights 5 of the loops 6, whereby said bights are doubled with the loops 8 already on the needles N2 to complete the lock stitches, after which two plain loop courses are knitted in succession upon the needles. This cycle is repeated over and over again, except that in order tostagger the lock stitches, the field of operation of the pointsl is transposed by the extent of two needles either to the right or left as desired.

stitches in each of which a bight, drawn from` one side leg of a loop in one Wale of the fabric, extends crosswise of the other side leg of such loop, and is doubled with a loop in another Wale.

2. Nonrun knitted weft fabric having lock stitches in eachv of which a bight, drawn from one side leg of a loop in one wale, extends crosswise of the other side leg of such loop, and is doubled with a loop in the next adjacent needle wale.

3. Nonrun knitted weft fabric, according to claim l, in which the displaced bights of the lock stitches are twisted.

4. Nonrun knitted weft fabric, according to claim 2, in which the displaced bights of the lock stitches are twisted.

5. Nonrun knitted weft fabric, according to claim 1, in which the lock stitches are formed in spaced courses whereof the loops are interengaged with intervening courses of plain loops.

6. Nonrun knitted weft fabric, according to claim 1, in which the lock stitches occur at spaced intervals in courses whereof the loops are interengaged with loops of intervening plain courses, and in which the lock stitches of one lock stitch course are located midway between the lock stitches of another lock stitch course.

'7. No-nrun knitted fabric, according to claim 1, in which the displaced bights of the lock stitches are twisted, 'and in which the lock stitches are formed inspaced courses whereof the loops are interengaged with intervening courses of plain loops.

8. Nonrun knitted fabric, according to claim 1, in which the displaced bights of the lock stitches are twisted, in which the lock stitches occur at spaced intervals in courses whereof the loops are interengaged with loops of intervening plain courses, and in which the lock stitches of alternate lock stitch courses are located midway between the lock `stitches of the other lock stitch courses.

9. Nonrun knitted fabric, according to claim 2, in which the displaced bights of the lock stitches are twisted, and in which the lock stitches -are formed in spaced courses whereof the loops are interengaged with intervening courses of plain loops.

10. Nonrun knitted fabric, according to claim 2, in which the displaced bights of the lock stitches are twisted, in which the lock stitches occur in courses whereof the loops are interengaged with loops of intervening plain courses, and in which the look stitches of alternate lock stitch courses are located intermediate the lock stitches of theother lock stitch courses.

11.*The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a course of loops on a row of needles, displacing` bights drawn from side legs of individual loops at intervals along the series laterally across the other legs of such loops and doubling said bights with loops on other needles, and then knitting onev or more plain courses on the needles.

12. The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a course of loops on a row of needles, displacing bights drawnfrom side legs of individual loops at intervals along the series laterally across the other legs of such loops, twisting said bights and doubling them with loops on other needles, and then knitting one or more plain courses on the needles.

13. The method of producing nonrun knitted weftfabric by repetitions of a cycle which comprises forming a course of loops on a row of i needles, displacing bights drawn from side legs of individual loops at intervals along the series laterally across the other legs of such loops, and across the contiguous sinker Wale loops, and doubling said bights with loops on the immediately adjacent needles, and then knitting one or more plain courses on the needles.

14. The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a course of loops on a row of needles, displacing bights drawn from side legs of individual loops at intervals along the series laterally across the other legsof such loops and doubling said bights-with loops on other needles to form lock stitches, knitting one or more plain courses on the needles, knitting another lock stitch course Aas before but forming the lock stitches on needles intermediate those previously used for this purpose, and then again knitting one or more plain courses.

15. The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a'course of loops on a row of needles, displacing bights drawn from side legs of individual loops at intervals along the series laterally across vthe other legs of such loops,

twisting said bights and doubling them with loops on other needles to form lock stitches, knitting one or more plain courses on the needles, knitting another lock stitch course as before'but forming the lock stitches on needles intermediate those previously used for the purpose, and then again knitting one or more plain courses.

16. The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a course of loops on a row of needles, displacing bights drawn from side legs of individual loops at intervals along the series laterally across the other legs of such loops and across the contiguous sinker wale loops and doubling said bights withr loops on the imme diately adjac-ent needles to form lock stitches, knitting one or more plain courses on the needles, knitting another lock stitch course as before, but forming the lock stitches on needles intermediate those previously employed for the purpose, and then again knitting one or more plain courses.

17. The method of producing nonrun knitted weft fabric by repetitions of a cycle which comprises forming a course of loops on a row of needles, displacing bights drawn from side legs 'of individual loops at intervals along the series laterally across the other legs of such loops and across the contiguous sinker Wale loops, twisting plain courses.

said bights and doubling them with loops on the immediately adjacent needles to form lock stitches, knitting one or more plain courses on the needles, knitting another lock stitch course as before, but forming the lock stitches on needles intermediate those previously employed for the purpose, and then again knitting one or more JOHANNES PAUL' LUDWIG. 

